oDesk PHP 5 Test Answers

oDesk PHP 5 Test Answers

1. Question: What is true regarding this code?
Answer: setcookie will return true

2. Question: Which of the following is not a correct way of printing text in php5?
Answer: echo “Plain text”;

3. Question: Which of the following is not the correct way of starting a session?
Answer: session_initiate()

4. Question: Which of the following functions do you need to implement HTTP Basic Authentication?
Answer: None of the above

5. Question: Which of the following Command Line Interface constant is not defined in the CLI SAPI?
Answer: STDPRT

6. Question: Which of the following statements is correct with regard to final and abstract?
Answer: a. An abstract class cannot have final methods

7. Question: Which composite data types are supported by php?
Answer: Array

8. Question: The default value of register_globals in PHP is:
Answer: Off

9. Question: Which of the following is not a valid PHP connection status?
Answer: open

10. Question: Choose the correct statement:
Answer: include() includes and evaluates a specific file
require_once() includes and evaluates a specific file only if it has not been included before

11. Question: If the session_cache_expire() is not set, then by default the session cache will expire after:
Answer: 3 hrs

12. Question: What will be the output of the following script?
$count=50;
Paamayim Nekudotayim operator allows access only to the static members of a class?
Paamayim Nekudotayim operator allows access only to the static members of a class?
Answer: function_exists
$i=4;
User Name:
Password:
class Manager{
Answer: 5+2 * 4+6
$var = 1 + “-1.3e3″;

function Argument()
{
$count++;
echo $count;
}
Argument();
?>
Answer: It will print 1

13. Question: State whether True or False
Answer: True

14. Question: Which of the following statements is true with regard to comparisons in PHP5?
Answer: With (===) operator, object variables are identical if and only if they refer to the same instance of the same class.

15. Question: What will be the output of the following code?
$a = 0.0;
for ($i = 0; $i < a ="="">
Answer: 1

16. Question: What will be the output of the following code?
$j=30;
$k=0;
$k=$j++/$i++;
echo $i . ” ” . $j . ” ” . $k . ” “;
Answer: 5 31 7.5

17. Question: Which of the following is a not a correct way of commenting in php?
Answer: /#PHP Comment

18. Question: Following is a php code block:
$m=9;
$n=99;
$z=8;
$z=$n++/$m++ + –$z;
echo $z;
what will be the output?
Answer: 18

19. Question: Which of the following is the correct way of specifying default value?
Answer: function GetDiscount($Type = “Special”) { . . . }

20. Question: With reference to the following php script:
print ‘Text Line1′
print ‘Text Line2′
?>
What will be the output on running the script?
Answer: Error message will be printed

21. Question: What will be the ouput of the following code?
for ($i = 0; $i < i ="="">
0134
Question: Late PHP versions support remote file accessing for the functions:
Answer: include_once()
require_once()
both of them

22. Question: You have designed a user login form as follows:
How can you access the username entered by the user in the ‘Validate.php’ webpage?
a. $var= $_POST['username'];
b. $var= $_REQUEST['username'];
c. import_request_variables(‘p’, ‘p_’);
$var= $p_username;
Answer: Both of them

23. Question: Which of the following does not represent logical AND operator in PHP?
Answer: &amp

24. Question: Which of the following is not true for a persistent connection?
Answer: These can’t be converted to non-persistent connections

25. Question: Which of the following are invalid data types in PHP?
Answer: char

26. Question: The Manager and Office classes are as follows:
function printName() {
echo “Manager”;
}
}
class Office{
function getManager() {
return new Manager();
}
}
$ofc = new Office();
???
?>
Which of the following should replace ‘???’ to obtain the value of printName() function?
Answer: $ofc->getManager()->printName();

27. Question: The classes are defined as follows:abstract class BaseCls{
protected abstract function getName();
}
class ChildCls extends BaseCls{
}
Which of the following implementations of getName() is invalid in ChildCls?
Answer: public function getName(){}

28. Question: Which of the following variable declarations within a class is invalid in PHP5?
Answer: var $term =3;

29. Question: What will be the output of following code?
$arr = “a”;
$arr[0]=”b”;
echo $arr;
echo $arr[0];
Answer: bb

30. Question: For the following code:
the output will be:
Answer: 171

31. Question: What is the result of the following expression?
Question: What will be the output of following code?
echo $var;
Answer: -1299

32. Question: What will be the output of following code?
$var1=”a”;
$$var1=”b”;
echo “$var1 $a”;
Answer: a b

33. Question:What is the output of the following code?
$a = 500;
$b = 200;
echo $a % 2
* $b;
?>
Answer: 0

34. Question: What will be the ouput of the following code?
if (-1)
print “true”;
else
print “false”;
?>
Answer: true

35. Question: What will be the output of the following code?
echo 12 . 6;
Answer: 126

36. Question: Consider the following sample code:
$x = 0xFFFE;
$y = 2;
$z = $x && $y;
What will be the value of $z?
Answer: 1